What is CVE-2023-0458?

CVE-2023-0458 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2023-0458 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-0458?

CVE-2023-0458 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Is there a patch available for CVE-2023-0458?

No patch is currently available for CVE-2023-0458. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-0458 actively exploited?

CVE-2023-0458 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2023-0458

Medium

A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11

Package Linux Kernel

Published 2023-04-26

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Vector string

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness type

CWE-476

CVE-2023-0458 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-0458 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html

Mailing List Third Party Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/diff/kernel/sys.c?id=v6.1.8&id2=v6.1.7
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/739790605705ddcf18f21782b9c99ad7d53a8c11
Patch

Details

CVE ID CVE-2023-0458

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2023-04-26

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-0458?

CVE-2023-0458 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2023-0458 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-0458?

CVE-2023-0458 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
Is there a patch available for CVE-2023-0458?

No patch is currently available for CVE-2023-0458. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-0458 actively exploited?

No — CVE-2023-0458 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. View CWE-476 on MITRE CWE →